Rolling-mill scale.



PATENTED DEC. 17, 1907.

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No. 873,879. PATENTED DEC. 17, 1907.

I M. MAURBR.

ROLLING MILL SCALE.

APPLICATION FILED mu. '1, 1906.

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PATENTED 13120.17, 1907.

' M; MAURERL ROLLING MILL SCALE. APPLIOATION FILED MAR. 7, 1900.

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PATENTED DEC. 17, 1907. M. MAURER.

ROLLING MILL SCALE.

APPLICATION FILED MAR. '1. 1906.

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MARTIN MAURER, or PUEBLO, COLORADO.

ROLLING-MILL SCALE.

Specification of Letters Patent.

Patented Dec. 17, 1907.

Application filed May '7. 1906. Serial No. 304,630.

To all whom it may concern:

Be it known that I, MARTIN MAURER, a citizen of the United States,residing at Pueblo, in the county of Pueblo and State of Colorado, haveinvented or discovered new and useful Improvements in Rolling-MillScales, of which the following is a specification.

My invention relates to weighing mechanism for use with rolling millsand has particular reference toscales for weighing rolled products, asbeams, rails, and the like, as they issue from the rolls for the purposeof determining whether they have the required weight for their length,and how much more or less they Weigh than the required amount. My scalesare also for use in weighing billets, blooms, and the like.

Referring to the drawings which form a part of this specification,Figure l is a side elevation of a part of a rolling-mill table and of apart of two sections of a scale for use in connection therewith, theplunger-operating mechanism being omitted; Fig. 2, an elevation, partlyin section, of one of the plungers and the alternative cratingmechanisms therefor; Fig. 3, a hal' plan and horizontal section of apair of plungers and the operating mechanism therefor Fig. 4, a sideelevation of the scale beam and parts immediately connected therewithand of the motor controller; Fig. 5, a detail partly in section showingthe manner of connecting the levers and the stands Fig. 6, a section onthe line of Fig. and Fig. 7, a diagram of the electrical circuits.

On the drawings, 1 designates a number of rollers of a rolling-mill orother table or conveyer, and 2, 3, and 4 the horizontal metalsupportingcross-heads or cross-bars located between the rollers 1 and normallybelow their upper surfaces. These cross-bars are supported on the upperends of the rods or plungers 5, guided in the frames 6 resting on theI-beams 7.

Supported on the cross-piece 8, resting on the beams 7 is the electricor other motor 9.

The motor-shaft carries the bevel pinion 10,

which meshes with the bevel wheel 11, supported on the vertical shaft12, having bearings in the cross-piece 8 and the foot or step 18. Theshaft 12 carries a worm 14 1neshing with the segment 15 of a worm-wheelon the horizontal rock-shaft 16 mounted in hangers 17 on the under sideof the frames 6. The shaft 16 has fixed thereto the camarms 18 securedto the nearest plungers 5 by the pivots 19. The cam shaped ends of thearms 18 lie beneath and actuate the camarms 20 which are carried by theshaft 21 and to which the plungers 5 farthest from the shaft 16 arepivotally connected by the pins 22. The shaft 21 is supported in thehangers 23 on the under side of the frames 6.

In Fig. 2, I have shown ahand-o erated device for actuating the shaft16. his device is for use when for any reason the motor becomesinoperative or it is preferred to use a hand device. The shaft 16carries a pin or piece of metal 24 which has movement in the arc-shapedslot 25 in the hub of the segment 15. Normally the pin is at theright-hand end of its travel, as shown in Fig. 2. The shaft 16 hassecured thereto the lug 26, in which is secured the operating lever 27and the arm 28. To the arm 28 is secured the pin 29 on which rocks thebeam 30 carrying the weight 31 having the rollers 32, running on theupper edge of the beam. Each end of the beam carries a weight stop 33,having secured thereto the cushion-spring 34. The outer end of the arm28 pivotally supports the anglelever 35, whose short arm 36 has a pinand slot connection 37 with the beam 31. One of the I-beams 7 supportsthe segment 38, having therein the notches 39 in which the end of thecatch rod 40 engages to lock the arm 28 in any desired position. Theusual finger pull 41 on the handle 27 withdraws the rod 40 from thenotches.

42 and 43 are switches for stopping automatically the motor 9 so thatthe mechanism will not be broken. These switches are operated by theends of the segment, one switch stopping the motor when the articles arelifted to a certain level, and the other switch stopping it when thecross-bars are below the article.

The I-beams 7 are supported on the bearing stands 45 which rest on thelevers 46, each having one end supported by a stand 47. The levers 46are not connected directly to the bearing stands 45 and the stands 47,but

by the links 48 provided each with the saddle bearing block 49. Thelower side of each bearing block is rounded to a proper radius to takeup the motion of vibration in weighing. The links and saddle blocksrelieve the wear on the pivots 50 which bear on the links. Referring toFig. 5, it will be seen that the rounded part of the bearing block 49permits the rocking of the levers without causing a perceptible movementof the pivots 50 on the ends of the links.

The scale levers are, except as described, of the usual construction.Their movement is transmitted to the rod 51, which is shown on Fig. 4connected to the indicator or weighi'ng beam 52 in the usual manner. Onthe beam 52 is the bar 53 hearing three horizontal lines of figures,viz.the upper line indicating the weights per yard of the product to beweighed; the second line the length'in feet of such products; and thethird the total weight of such products for the length and the weightper yard directly above. Thus, in the first vertical column, 25 means,for eX- ample, the weight per yard required for certain beams; the 30under the 25 shows the required length of the beam; and the 250 underthe 25 and 30 indicates the weight of a thirty foot beam, weighing 25pounds per yard in length.

54 is the poise or weight for the scale bar 53.

1 55 is the upper bar on the scale beam 52 and carries the two poises 56and 57 which are normally close together near the center of the bar 55.If a beam, rail, etc. has the required weight per yard, the weights 56and 57 will not need to be moved; but if the beam or rail is too lightper yard, the weight 56 will be moved to the left until the beam 52balances, whereupon the weight will show the number of pounds the beamor rail is too light. If the beam or rail is too heavy per yard, theweight 57 will be moved to the right and when the beam 52 balances, theweight 57 will indicate how much the overweight is. I prefer to mark theweights 55 and 57 respectively, with the words Light and Heavy or withthe initials L and H, as shown. The middle bar 48 is for ordinaryweighing.

On Fig. 1 I have shown how one section of a scale may have anothersecured thereto in order to weigh long articles. The manner of unitingthe scale lever mechanism may be as desired, it already being old tounite together two or more sections to form a single weighing mechanism.The sections are substantially alike and the shafts 16 of adjacentsections'are connected together preferably by a sleeve ,59 which hastelescopic connection with said shafts. The sleeve is connected to theshafts 16 by the pins 60 or in any other desired manner. In case onesection breaks down or gets out of order, it may be uncoupled and theother section or sections employed. Ordinarily the number of sections inuse will vary with the lengths and weights of the articles weighed. butI do not limit myself to the use of any definite number of sections.

The article to be weighed is delivered from the rolling mill to rollertable or other support. The handle of the controller 44 is moved tostart the motor in the proper direction to cause the shaft 16 to liftthe arms 18 which as they rise, lift the arms 20. The arms 18 and 20lift the plungers 5 and the cross-bars 2, which move from the full-lineto the dotted-line position on Fig. 2 and at the same time lift thearticle from the rollers and cause the weight thereof to be borne by thescale levers. The weight 54 is moved on the bar 52 so as to indicate therequired weight per yard of the article. The required weight for thelength indicated by the middle line of the bar will be shown on thelower line. The weight 56 and 57 is moved to ascertain how much toolight or heavy the article is. The motor is stopped during the weighingby one of the switches 42 or 43 or by the controller 44 and after theweighing, by the other switch or the controller.

The rollers 1 are merely symbolic of any table whether a travelingconveyer or a sta tionary table.

The hand mechanism of Fig. 2 is hung on the shaft 16 so as to balancethe cross-bars. The article being above the cross-bars 2, the handle 27is lowered until the arm 28 is horizontal. During this movement the pin24 will rock in the slot 25. The handle 35 is now thrown to the right,which rocks the scale beam 30 on its pivot 29 and causes the weight 31to run to the left until it engages the stop 61 placed in one of theholes 62 in the beam. The rolling of the weight to the left willoverbalance the load and raise it clear of the rollers, eonveyer orplatform, on which it was resting. The article is then weighed the sameas when the motor was employed to lift the article. By reversing theoperations of the levers 35 and 27, all the parts are returned to theirnormal positions, as shown on Fig. 2, and the article on the cross-bars2 is again lowered upon the eonveyer or platform.

Referring to Fig. 7, 63 and 64 are a pair of switch arms connectedtogether by the link 65 and constituting the reversing-switch element ofmy controller. The arms are arranged when the motor circuit is open atthe main switch I) to stand as shown in full lines, the arm 63 standingmidway between the fixedv contacts 66 and 67, and the arm 64, midwaybetween the said contact 67 and the fixed contact 68. The contacts 66and 68 are conneeted together by the wire 69, connected to the middlecontact 67 by the wire 70, which has the armature 71 of the motor 9 inits circuit. The field 72 of the motor has one terminal connected to theswitch arm 64 and the other terminal connected to the fixed consagastacts 73 and 74 of the limit switches 42 and 43. The handle 75 of thecontroller 44 is movable on the pivot 76 between its ends, its lower endhaving a pin-and-slot connection with one end of the lever 77 movable onthe pivot 78 between its ends. The remaining end of the lever 77 ispivotally connected. to the link 65 at its middle portion which isinsulated from its end portion. The upper end of the controller handleis insulated from the remainder thereof and serves as a switch memberand has uninterrupted contact with the long fixed contact 79. To theright and. left of the handle 75 when in its vertical position are thecontacts 80 and 81, connected in parallel with their respectiverheostats 82 and 83, the outer member of the contacts 81 being connectedto the fixed contact 84 of the switch 42, and the outer member of thecontacts 80 being connected to the fixed contact 85 of the switch 43.Normally the switch 42 is held against the contacts 73 and 84 by thespring 86, and the switch 43, against the contacts 74 and 85 by thespring 87. The switches 42 and 43 have the respective extensions 88 and89 standing in the path of movement of the ends of the segment 15. Thepositive lead Wire 91 is connected to the switch arm 63, and thenegative wire 92, to the contact 79.

Then the parts stand as in Fig. 7, the motor connections are severed atboth the reversing and the rheostatic switches, and the motor 9 will beat rest. If the handle is moved to the left, so that it and thereversing switches stand as shown in the dotted lines, the circuits areasfollows: from the positive wire 91 through the switch arm 63, thecontact 67, the wire 70 and the armature 71, the contact 68, the switcharm 64, the field 72, the contact 73, the switch 42, the contact 84, oneof the contacts 81, the upper end of the lever 75, and the contact 79 tothe negative wire 92.

This will cause the armature 71 to rotate and 63 and 64 over to thecontacts 66 and 67, re-

spectively, whereupon the motor circuit will be closed as follows: fromthe positive wire 91 through the switch arm 63, the contact 66, the wireand the armature 71 in a direction opposite to the former direction, andthence through the contact 67, the switch arm 64, the field 72, thecontact 74, the switch 43, the contact 85, one of the contacts 80, theupper end of the lever 75, and the contact 79 to the from the contacts74 and 85, thus opening again the motor circuit. The contacts of theswitch 43 were closed by the spring 86 as soon as the segment 15permitted the same, but

these contacts remain dead during the lowering of the cross-bars 3, asthe lever 75 does not bridge the contacts 81 and 79. When the lever 75is swung again to its dotted position, the motor will be again reversedand the cross-bars caused to rise as before.

1 do not desire to be restricted to the precise mechanism shown anddescribed as it can be variously modified and still retain the spirit ofmy invention.

Having described my invention, 1 claim 1. An article support, a weighingmechanism having means for lifting the article above its said support,an electric motor for oper ating said lifting means and means forautomatically stopping the motor when the artiole has been lifted fromsaid support.

2. An article support, a weighing mechanism having means for lifting thearticle above its said support, a motor for operating said lifting meansand means for automatically stopping the motor when the article has beenlifted from said support and means for stopping the motor when thearticle has been deposited upon said support.

3. An article support, a weighing mechanism having means for lifting thearticle above its said support, a shaft for operating said liftingmeans, a worm gearing on said shaft for operating the same, a motor foroperating the worm gearing, a hand-operated device for operating saidshaft, independent of the worm gearing and means permitting the shaft tobe operated by the said hand-operated device without operation of theworm gearing.

4. An article support, a Weighing mechanism having means for lifting thearticle above its said support, a shaft for operating said liftingmeans, a worm gearing on said shaft for operating said shaft, meansindependent of the worm gearing for operating said shaft and a lostmotion connection between last named means and said worm gearing.

5. An article support, a weighing mechanism having means for lifting thearticle above its said support, and alternative motor and hand devicesfor actuating said lifting means and means preventing the operation ofthe motor deviceduring the operation of the hand-operated device.

6. An article support, a weighing mechanism means supported by saidmechanism for lifting the article above its support, an overbalance beamfor said lifting means and artiole, a Weight movable along said beam,and means for causing the Weight to move along said beam so as toover-balance and lift the load above said support.

7. An article support, a series of Weighing mechanisms, each havingmeans for lifting the article above its support, means for oper- 10ating one of said lifting means, and means for detachably connecting oneor more of the members of said series to said operating means. I

Signed at Pueblo, Colorado, this 3rd day of August A. D. 1905.

MARTIN MAURER.

WVitnesses:

J. C. DURFEE, J. H. ROBINSON.

